Since after download patch 1.16.5,, I can't join a LAN-world which is on the same internet IP-adres as mine. Neither can the person see my world when I open it up for LAN.

I only get a loading screen plus afterwards this screen:  "Failed to connect to the server: io.netty.channel.AbstractChannel AnnotatedConnectException: Connection timed out: no further imformation."

It used to work before all the time, then suddenly after updating it doesnt anymore. This happens for any world we try, even if we try a new one, on any mode.